"All Flock" is the Nutrena brand of Purinas "Flock Raiser." They are both advertised as a one-size-fits-all feed for chickens, ducks, turkeys and gamebirds. Purina's has a higher protein content (20%) then Nutrena (18%). Nutrena's 18% is more in line with what average chicken feed has while I belive that other types of fowl generaly need more then that, up to 28% protein for game birds (and some use it faster maturing, heavy beeds of chicken such as bantam brahma's.)
The general breakdown of nutrients between the two is this:
Nutrena All Flock:
Crude Protein 18.0%
Lysine 0.8%
Methionine 0.31%
Crude Fat 2.5%
Crude Fiber 8.0%
Calcium 1.4% - 1.9%
Phosphorus 0.6%
Salt 0.25% - 0.65%
Sodium 0.15% - 0.2%
Purina Flock Raiser:
Protein, not less than 20.0%
Lysine, not less than 0.95%
Methionine, not less than 0.35%
Fat, not less than 3.5%
Fiber, not more than 5.0%
Calcium, not less than 0.8%
Calcium, not more than 1.3%
Phosphorus, not less than 0.7%
Salt, not less than 0.35%
Salt, not more than 0.85%
Vitamin A 7,000 IU/lb
Vitamin E 14 IU/lb
(Both charts are from their respective websites)
You can see Flock Raiser generally has higher concentraitions then the All Flock, with the exeption of the calcium content, and also has Vitamins A and E.
"Chick Grower" is not a label name that I've heard of or can find, so if you can find the brand it would be helpful. Purina's chick feed is labeld "Start And Grow: Sunfresh Recipie" and comes in both medicated and non. It generally has smaller concentraitions of nutrients then their Flock Raiser feed. Nutrena has two chick feeds, their Naturewise and Country Feeds lables. The only discernable difference being that Naturwise is touted as an all natural feed. They too appear at a glace to have lower concetraitions of nutrients then their adult feed counterpats, aside from the protein which is kept at 18%, both also come in medicated and non.
I have always given my chicks a chick starter/grower rather than an adult bird feed, I have no rhyme or reason for this and I know many people who give their chicks different types of feed. Some go for more protein etc. depending on the type and breed of fowl they have. You can give your chicks other foods as well, but keep in mind that if you are giving food other then crumbles, they will likely need a grit as well, which comes in "chick" size I think, but since Ive never used it, I don't know. I would also steer away from medicated feed, which has anti-coccidiotates (Sp?) to prevent your chicks from developing the disease. However, this prevents them from developing a natural immunity, IMO, and would therefore need medicated feed into adulthood as well.